Amberwolf, this one (the 22T-ENO) ?
I think that would work, I could easily attach a second sprocket (in a more desirable tooth-count too) to stand off enough to allow two chains at the same time. Cheaper than the "Dos" also. Great idea, might do that later...I noticed having a small chainring allows me to have good curb-jumping clearance, while the jackshaft gear-up would still allow me to pedal at higher motor-speeds (Instead of adapting a 52T chainring)
Rodney Dangerfield: "I tell ya, I get no respect!...I was talkin to my wife on the phone, and she happened to mention she wanted to try some S&M today...I started to get a little excited, so I left work early. But when I got home and opened the bedroom door, I found out she meant Salesmen & Mechanics" (cue rimshot)